Dynamic Water Routing Using a Predictor-Corrector Method with Sediment Routing

摘要

A stable and efficient dynamic water routing method is presented which overcomes the difficulties of many numerical models by introducing physical concepts into the finite difference solution technique. Stability restrictions or complexity of the explicit and implicit schemes are overcome without reverting to simplifications of the complete St. Venant equations, but by controlling the flood wave movement in space and time with the nonlinear wave celerity. Simplicity and efficiency in the solution technique is attained by solving the governing equations in an uncoupled manner with a predictor-corrector method. The use of a predictor-corrector method inhibits the growth of error.